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Given, cos 2^(m) theta cos 2^(m + 1) the...

Given, `cos 2^(m) theta cos 2^(m + 1) theta….cos 2^(n)theta = (sin 2^(n+1)theta)/(2^(n-m+1)sin 2^(m)theta)"where"2^(m) theta ne kpi, n, m, k in I` solve the following
`"sin" (9pi)/(14) "sin" (11 pi)/(14)"sin" (13 pi)/(14)` is equal to

A

`(1)/(64)`

B

`-(1)/(64)`

C

`(1)/(8)`

D

`-(1)/(8)`

Text Solution

Verified by Experts

The correct Answer is:
C
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